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Physical Properties of Rubidium and Erbium

Rubidium
Erbium
Physical Properties of Erbium and Rubidium


Physical Properties
Melting Point
38.89 °C   
99+
1,522.00 °C   
28
Boiling Point
688.00 °C   
99+
2,510.00 °C   
99+
Appearance
  
  
Physical State
Solid   
Solid   
Color
Grayish White   
Silvery White   
Luster
NA   
Lustrous   
Hardness
  
  
Mohs Hardness
0.30   
24
Not Available   
Brinell Hardness
0.22 MPa   
99+
814.00 MPa   
11
Vickers Hardness
Not Available   
589.00 MPa   
19
Speed of Sound
1,300.00 m/s   
99+
2,830.00 m/s   
28
Optical Properties
  
  
Allotropes
No   
No   
α Allotropes
Not Available   
Not Available   
β Allotropes
Not Available   
Not Available   
γ Allotropes
Not Available   
Not Available   
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